diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-15 22:25:27 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:13:10 -0800 |
| commit | e7a0453ef82c1433a35ab82d874296fff68f3639 (patch) | |
| tree | 0dd18e3742bb838f7351a20186ea3a820d038231 | |
| parent | db33f9bc09aaf68db7866374f9219c676787b4a2 (diff) | |
[SPARC64] PCI: Size TSB correctly on SUN4V.
Forgot to multiply by 8 * 1024, oops. Correct the size constant when
the virtual-dma arena is 2GB in size, it should bet 256 not 128.
Finally, log some info about the TSB at probe time.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | arch/sparc64/kernel/pci_sun4v.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c index 13b611db058..902d07c714f 100644 --- a/arch/sparc64/kernel/pci_sun4v.c +++ b/arch/sparc64/kernel/pci_sun4v.c @@ -102,6 +102,7 @@ static void *pci_4v_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr first_page = __get_free_pages(GFP_ATOMIC, order); if (first_page == 0UL) return NULL; + memset((char *)first_page, 0, PAGE_SIZE << order); pcp = pdev->sysdata; @@ -805,11 +806,11 @@ static void pbm_register_toplevel_resources(struct pci_controller_info *p, &pbm->mem_space); } -static void probe_existing_entries(struct pci_pbm_info *pbm, - struct pci_iommu *iommu) +static unsigned long probe_existing_entries(struct pci_pbm_info *pbm, + struct pci_iommu *iommu) { struct pci_iommu_arena *arena = &iommu->arena; - unsigned long i; + unsigned long i, cnt = 0; u32 devhandle; devhandle = pbm->devhandle; @@ -819,9 +820,13 @@ static void probe_existing_entries(struct pci_pbm_info *pbm, ret = pci_sun4v_iommu_getmap(devhandle, HV_PCI_TSBID(0, i), &io_attrs, &ra); - if (ret == HV_EOK) + if (ret == HV_EOK) { + cnt++; __set_bit(i, arena->map); + } } + + return cnt; } static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm) @@ -853,7 +858,7 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm) case 0x80000000: dma_mask |= 0x7fffffff; - tsbsize = 128; + tsbsize = 256; break; default: @@ -861,6 +866,8 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm) prom_halt(); }; + tsbsize *= (8 * 1024); + num_tsb_entries = tsbsize / sizeof(iopte_t); dma_offset = vdma[0]; @@ -882,7 +889,10 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm) memset(iommu->arena.map, 0, sz); iommu->arena.limit = num_tsb_entries; - probe_existing_entries(pbm, iommu); + sz = probe_existing_entries(pbm, iommu); + + printk("%s: TSB entries [%lu], existing mapings [%lu]\n", + pbm->name, num_tsb_entries, sz); } static void pci_sun4v_get_bus_range(struct pci_pbm_info *pbm) |